Messages in this thread | | | Date | Tue, 18 Jan 2011 09:16:46 -0800 | From | Jesse Barnes <> | Subject | Re: i915 completely broken with KMS off |
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On Tue, 18 Jan 2011 22:57:01 +1100 Herbert Xu <herbert@gondor.apana.org.au> wrote:
> Hi: > > I just upgraded my kernel on a machine with i915 and it has > started crashing constantly with messages like this: [snip] > The cause is this changeset: > > commit 8187a2b70e34c727a06617441f74f202b6fefaf9 > Author: Zou Nan hai <nanhai.zou@intel.com> > Date: Fri May 21 09:08:55 2010 +0800 > > drm/i915: introduce intel_ring_buffer structure (V2) > > This changeset completely broke i915 without KMS because the new > intel_ring_buffer structure is never initialised with KMS off, > unless the ioctl I915_GEM_ENTERVT is invoked. > > So without invoking that ioctl, the kernel will always crash > whenever the i915 driver dereferences pointers on the render_ring > data structure. > > Or is this a hint to get people to convert to KMS :)
Heh, well that would be one option for you. :)
The breakage was unintentional though; I imagine Chris will have an idea of how to fix it quickly for you.
-- Jesse Barnes, Intel Open Source Technology Center
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